the field of medicine that specializes in the study of tumors. oncology. The branch of medicine that deals with the study and treatment of tumors.
Who are they? Millennials are currently aged 20-35, or born between 1980 and the end of 1994 (with some more generous definitions taking in those born up to 2000). They also get called Generation Y, because they follow on from Generation X (born 1965-1979), and other, less flattering names.
Millennials (also known as the Millennial Generation or Generation Y) are the demographic cohort following Generation X. There are no precise dates when the generation starts and ends; most researchers and commentators use birth years ranging from the early 1980s to the early 2000s.illiam Strauss and Neil Howe projected in their 1991 book Generations that the U.S. Millennial population would be 76 million. Later Neil Howe revised the number to over 95 million people (in the U.S.). As of 2012, it was estimated that there were approximately 80 million U.S. Millennials.